Screening apparatus.



E. E. ALLEN.v SCREENING APPARATUS. APPLICATION man ocT. 6. 1911.v

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SCREENING APPARATUS.

APPLICATION FILED 00T. 6. I9II.

Patented Apr. 23, 1918.

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Y EDWARD E. ALLEN, GF ERIE, PENNSYLVANIA, ASSIGNOR T0 ALLEN MACHINE COll/L PANY, OF ERIE, PENNSYLVANIA. A CORPORATION OF PENNSYLVANIA.

SCREENING APPARATUS.

Application filed ctobcl 6, 1917.

To all whom t may concern.'

Be it known that l, EDWARD E. ALLEN, a citizen of the United States, residing` at Erie, in the county of Erie and State of Pennsylvania, have invented certain new and useful lmprovements in Screening Apparatus; and l do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use 'the Same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, formingpart of this specification.

This invention relates to screening-apparatus, and particularly to such screens used for separating reclaimed rubber from foreign materials miXed therewith.

rlhe objects of my invention are to so construct such a screen that the Screening of the rubber can be accomplished with a maximum amount of speed and at the same time with a minimum amount of labor in the cleaning of the screens and adjusting the mechanism for operation.

l accomplish these objects by means of the improvements in the construction and arrangement of mechanism, substantially as hereinafter set forth and described and illustrated in the accompanying drawings in which:

Figure l, iS a side view in elevation of my improved screening-apparatus.

Fig. 2, is a top or plan view of the screen.

Fig. 3, is a vertical central section of a portion of the same.

Fig. 4, is a view of the screen carrier and screen partially in elevation and partially in section.

F ig. 5, is a view in elevation of the inner end thereof.

ln these drawings A indicates the frame of the machine, and B a longitudinal cylinder thereon, one end B of which is open, and the opposite end B2 closed. In the closed end B2 of the cylinder, there is mounted a forcing-screw C, which extends beyond the open end B of the cylinder so as to enter and operate in a screen as hereinafter described.

0n the opposite end of the forcing-screw C, suitable gearing D-D is provided for rotating it, and in the top of the cylinder B adjacent to the end B2 thereof, l provide an inlet opening through which unscreened Specification of Letters Patent.

ratentea npr. aa, reis. serial no. 195,141.

rubber is fed to the cylinder B. To the frame A at one Side of the end B of the cylinder B and parallel with the aXis thereof, l secure an arm E on which there is centrally mounted a transverse arm F by means of a sleeve F', so that the arm F will slide longitudinally and also rotate freely on the arm E.

On each end of the arm F, l mount aperforated screen-shell G, at such distance from the axis of the arm F that when it is swung around in front of the open end B of the cylinder B, the beveled inner end thereof will enter and lit into a conical recess at the open end B of the cylinder B, as clearly illustrated in Fig. 3.

In the inside of the perforated screen-shell G, there is a removable wire-screen G preferably secured in place by being clamped at its inner end against the inside of the screenshell G by means of a hinged Sectional clampring l-l, which is forced outward by a wedge H between the ends of the ring-sections, as

clearly shown in Fig. 1l. For closing the outer end of the screen-shell G, and securing the screen-shell G in operative position against the open end of the cylinder B, l provide a cap I carried by a screw K passing through a nut 7c in the cross arm J of the yoke J, as illustrated in Figs. l and 3 and engaging a recess I in the cap l.

The yoke J is pivoted upon trunnions J2 on the frame A so that when the cap I is withdrawn from the end of the Screen-shell Gr by the action of the screw K, the yoke J and cap l can be swung to one side, as illustrated in F ig. 2, when the screen-shell G can be moved back from the end of the cylinder B until it is clear of the end of the forcing-screw C as illustrated by dotted lines in Fig. 2; and the screen-shell G on the op posite end of the arm F swuno` into place and moved against the end of the cylinder7 and the cap l secured in place ready for operation; meanwhile the screen G can be removed from the screen-shell G, cleaned and replaced ready to be put into operation when the screen then in use becomes too fouled to operate satisfactorily; and this operation can be repeated as often as necessary.

In describing my improved mechanism I have shown and described a convenient construction for utilizing` my invention and its operation, so as to enable others to utilize the invention. l do not, however, desire to be confined thereto, as it is obvious that many modifications can be made therein without ydeparting from the spirit of the invention;

ltherefore what I claim as new and desire to secure by Letters-Patent is:

1. The combination ina screening-apparatus, of a frame, a cylinder, a forcingscrew therein, a screen slidably mounted on the machine frame so as to be moved against the end of the cylinder, and means for securing it in place.

2. The combination in a screening-apparatus, of a frame, a cylinder on said frame having one end open, a forcing-screw operating therein and extending through the open end of the cylinder, means for actuating the forcing-screw, a screen-shell rotatably and slidably mounted on the machine frame, and means for moving it and securing it in place against the open end of the cylinder.

3. The combination in a screening-apparatus, of a frame, a cylinder having one end closed and one open mounted on said frame, a forcing-screw mounted in the cylinder and extending out through the openend thereof, means for actuating the forcing-screw, a screen-shell revolubly and slidably mounted on the machine frame, a wire-screen removably secured in said screen-shell, means for moving the screen-shell and screen therein into place against the open end of the cylinder, a Cap for closing the outer end of the screen-shell, and yoke and screw mechanism for securing the cap and screen-shell in place against the end of the cylinder.

e. The combination in a screening-apparatus, of a frame, a cylinder` having one end open and one end closed, and an inlet opening near the closed end thereof, a forcingscrew mounted in said cylinder and extending through the open end thereof, means for actuating the forcing-screw, an arm on the machine frame parallel with the axis of the cylinder, a plurality of screen-shells mounted on arms rotatably and slidably mounted on the arm on the machine frame, and adapted to be adjusted so as to bring one of said screens at a time in apposition to the open end of the cylinder, and moved into contact therewith, a cap for closing the outer end of the screen-shell when it is in apposition to the end of the cylinder, and screw mechanism for securing the cap in place and the screen-shell against the end of the cylinder.

5. The combination in a screening-apparatus, of a screen-shell, a removable screen therein, an expansible ring for clamping the removable screen in place in the screen-shell, and means for expanding said ring.

In testimony whereof I affix my signature.

EDWARD E. ALLEN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

